Holman Bible Dictionary
(dal' fohn) Personal name apparently derived from Persian word perhaps meaning, “sleepless.” One of ten sons of Haman, chief enemy of Mordecai and Esther. The sons were killed when the Jews protected themselves against the Persian attack (Esther 9:7 ).
Fausset's Bible Dictionary
Hastings' Dictionary of the Bible
DALPHON ( Esther 9:7 ). The second son of Haman, put to death by the Jews.
Hitchcock's Bible Names
The house of caves
Morrish Bible Dictionary
One of the sons of Haman, slain and hanged. Esther 9:7,14 .